Air quality index [µg/m3]:
excellent ≤ 20
good ≤ 60
lightly polluted ≤ 100
moderately polluted ≤ 140
heavily polluted ≤ 200
severely polluted > 200
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
060011excellentexcellent11excellent
050010excellentexcellent11excellent
04008excellentexcellent11excellent
03005excellentexcellent11excellent
02006excellentexcellent11excellent
01009excellentexcellent11excellent
000013excellentexcellent11excellent
230012excellentexcellent21excellent
220022goodexcellent31excellent
210028goodexcellent41excellent
200024goodexcellent31excellent
190026goodexcellent41excellent
180014excellentexcellent21excellent
170011excellentexcellent21excellent
160011excellentexcellent21excellent
15008excellentexcellent11excellent
14007excellentexcellent21excellent
13007excellentexcellent11excellent
120014excellentexcellent31excellent
110024goodexcellent41excellent
100021goodexcellent31excellent
090026goodexcellent41excellent
080040goodexcellent41excellent
070045goodexcellent51excellent